Spreader clamp



April 25, 1933. A PODD 1,905,051

SPREADER CLAMP Filed Aug. 14, 1930 PatentedApr. 25, 1933 v i eaten m h ipiicationnleci segue 1:4 i930. .,serial No.1 475,315.

This invention relatesto new anduseful improvements in a spreader c1amp.-

One object of the invention is to provide a spreader clamp of thecharacter"described; designed for use in constructionwork'for holding parts together and particularly for ciently to support itself;

holding parts in desired "relation.

V A furtherfeature ,ofthe inventionzresides 1n the provislon 1n a spread er clampjof means for malntalnlng tlie rsecurlng' wedges in position to the endathat theywill not become l0ose,due tovibration- A still further feature. of the invention resides inwthe provision-of a novel type of spreader clamp having weakened=lines s01? that the projecting ends maybe :broken" off flush with ,thefoutersurface of themolded Wall orfbeam, or may bebroken offr 'beneath such surface. 0 if t A still further feature ofthe; invention resides in the provisionbf-a novel type. of

key for the purpose ofprovidinga keywa'yp in the molded object adjacent the body of the clamp so as to permitfthe: breakage .of the projecting endsof the body beneath the'sur-I. face of Said molded object, said keys being. specially formed so thattheywill be se curely held in place when the clamp is in use and can. be readily removed when it is desired to dismember the false work. 1

the invention has particular relationto certa1n novel featureslof construct1on,"arrangement of parts and use, aniexample of which is given in this specification and illustrated in the accompanying drawing, wherein Figure 1 shows a fragmentary horizontal sectional view, taken on the line 1-1 of Figure 2, of a form maintained in position by the type of spreader clamp described.

each: pair being spaced apart asj clearly Figure" shws a fragmentary vertical sectional view; thereof, taken on theline 2 2 of Figure'lzi I Figure?) shows an enlarged vertical sec-f tional- View taken 'on theline ure 2.

-i "Figure P'shows a fragmentary plan view of thebody of the spreader clamp.

Figure 5 showsja longitudinalsectional viewthereof, taken on the line-5+5 of- F ig- Figures 6 and 7fshow"fragmentaryplan views respectively ofslightly modified forms." T1 :Figure 8 shows a plan View of the outer end of the clamp body showing the keyway therethrough,*and

Figure 9 shows a verticalsectional-{view.

thereof-i taken on'the line"9 9 of Figql. showing-the wedge therein; 1

' Referring now more particularly tolthe 2 drawing whereinglike numerals of v referenee designate jsimila'rfparts in' each ofsides of the concrete "form intowhichthe plastic concreteis poured and molded. This a h 'kfie" A ures, the numeralsjl, designate the opposite form will'have the usual bottom (not shown) to receive thepoured iconcrete' and .to sup= studding 2, 2 and againstl'the outer sides of] the'studding there is the horizontally dis;

port the same. Abutting'the outer si des'of I 'thesides 1, 1 of the form rare the' vertical posed walinglformed of the timbers 3M3 p e er bly rrangedin pairs the timbers of shown in Figure 2; v Adjacent the upright studding 2,2 the side walls'are providedwith openings as gwhich are transverselyaligned and. which are also aligned with the-spaces 5, between the timber 3 as illustrated in Fig With the above and other ob ects in View, i

ures 1 and 2.x i l A construction 1n connect on Wltll-WlllCh the "spreader clamp may "be used has been A above described apreferred form-of the construction, and a method of the use of the clamp itselfrwilllnow be=gdescribed and ex-f plained.

.The of'the cl amp consists of a long strip: of metalafi, preferably of channel iron, having thelend slots 7, 7 forming keyways.

Loo

'8; 8 which" are thrown out tromthe material oi' thebodya 'These lugs are spaced a distance'apart over all equal to the thicknessof the concrete beam or Wall to be'formed'and they are located equal distances from the ,longitudinal-;central line of such beam o'r 'Wall. ,VVhen the false Work and the fside Vforms 1,}1 are erected inplace the spreader r p i points 17 "so that they may be broken off just clam-p may be insertedthreugh theopenings I ,-,ubeneath the surface of the Wall, or beam,' and 4 andthe space s 5 With the key slots? 'BX-J tending out beyond the Waling' 3 and'the" lugs 8 Will engage the inner sides-of the form being constructed asshoWn in Figure 2. The openingslntjabove the body of; the

" clamp may then besp'lugged-fupxinranysuitable manner so that the plastic material will.

not es ape-from the form. Suitablevwa'shlerSf .9 heathen r fitted over the ends :ofthe f clamp-body against the Waling 31andjthef edges 1105 10 aregt'hen driv'ennthroughthe keyyvays and bear j ajg'ainst said ashers-I0. and {serve to holdtheclamps securely in place In order to hold the Wedges against displacement by reason of vibration or other-,

. WlSQithQ .iniiersidesof theinterrnediate por-, tiens i the keyways 7 lareser'rated thus I forming the teeth 11 and as the'wedges-are driven-home, these teethwill be bent or ino nclined correspondingly,and will bite into" the Wedges" and securely hold the same 'againstfdi fplacement, l j

"*I-ttistf be understoodithat a ,numberrof.

1 5T clamps Will be used in "the construction and V th 'eygwill be; spaced apart the-required ;dis-' J tance'gso as to seeurelysustai-n the load to which the form will be-subjected. .1

v .Ifidesired keysi12 may be fitted inwardly close said openings.

between said projection and Wall and the key,-

' fldismantling; the form the keysfi12 will first,

'When the wedges" 10 are driven securely in place "the lugs 8 will: be drawn tightly againstythei inner. sides off-the Wallsthu's. -spreadi'nggandholding the; form Walls-the required "distanceapart and there holding them until the clamps. are released and iremovedy-after thec'oncrete :iis set.

through the openings 4 so. to, substantially a; ibarb 13 to engage with the corresponding placement due to; vibrationrror -other :cause.

'Thetouter end of each key 12 has "aiprojecw tionl l, spaced from the corresponding *wall and .so' that an implementmay-be inserted unseated and removed'rrwhen' desired. In

be Withdrawn and when the form is disc-reteas 'hereiri'before explained;

The inner ends ofthese ,keys p-roject;inwardly beyond 'the'sides 1, 1 soithat plastic'material will form" around them.; -These keys are each-provided with and said Walls may then be, readily removed. The ends of the stripsv 6 remamingfimay then be broken off at the'inner ends of said. keyways formed by the keys and the keyways then filled with a plastic concre-' tious material, and troyveled smooth.

In-case the'keys l2ar ej not ause'dithe clamp bodies 6 may be weakened' at the points'lfi so as, toibe readily broken off flush with the outer surface of the Wall, or beam or at the "inthislatter case the breakage of the clamp may "be covered up andriprotectedf by plastic concretiousmatenial troweled flush with the outer sun-face of thebeamcr wall.

v p InQcase the keys 12: are employed the clamp zbo'dy 6v should :be scored yor,;weakened at .a point Wardly from the corresponding Elug 8.;as in-.

dicated by the numeral; 1:8 in: Fig'ure.;7.

dismantling 'the[formy-the. iwedge's 10 may i I The drawing and description; disclose- -What, is, now: considered tocbe 1a preterred be easily,- driven outland thefal'se-Work land.- 7 ff-orm removed and the. endsi of-itheclamp body 6 broken off flush iththezface ofthe- V molded beam orflwall for backlintojthe con- What I claim isin;

ing concretious materialiand hayingraligned 7 openings- Off-g3, clamp forrmed of a strip of: 7

material having iend ikeyways' and fitted keyways; means=;.interlocking fWith f'slaid Y Wedges, and holding themi in" lplace; keys through said openings,; Wedges {through said fitted inwardly through. said; openings fad-- jacent said strip" and whose inner-endsfproject into the form and meansflon the' keys;

engaging-with the form to retain the "keys";

c; a'gainstfaccidental displacement; V r 2. Theloo'mbina'tion WithjflkfOfl'lIfOI molding concretiou's material and having aligned openings, of a clamp for-med {of a strip of" it: Y

material [having Yena keyways and fittedi through said openings,-wedges'throughsaidT v keyways, keys fitted inwardly; through said openings adjacent said strip and'whose'in ner ends project into-the form andmeans-Qn 1 sec the keys. engaging with the form -to retain the Jkeys'against accidental displacement.

.In testimony whereof I- ha e signed my i name tdthis specification.

mantled the. ends of the. clamp-"bodiesGmajy 

